Evaluating the Cologuard Test for Use in Lynch Syndrome

The primary aim is to perform a pilot study to gain information toward the implementation of a larger prospective study that will compare the performance of Cologuard with the gold-standard colonoscopy in identifying advanced adenomas and colorectal cancers in LS. Data regarding rate of consent, and adherence to the protocol will be recorded. Since patients with known genetic predisposition to cancers tend to view screening tests more positively than the general population, a second aim of the study is to evaluate patient satisfaction with bowel preparation, colonoscopies, and Cologuard testing. Up to 90 individuals with genetically confirmed LS will be recruited via Geisinger's HRC to complete a goal of 90 Cologuard studies. Upon enrollment, Cologuard will be ordered by the study team at no cost to the subject and will be completed according to the standard instructions for use. Results will be securely obtained and blinded until the time of data analysis. Subjects will undergo colonoscopy as part of their routine HRC visit. Results from the colonoscopy (and biopsy as indicated) will be retrieved from the Electronic Health Record (EHR) and documented in a research-associated spreadsheet. If repeat colonoscopy is clinically indicated, repeat Cologuard may be completed if the subject meets inclusion criteria.